Window locking device

ABSTRACT

A window lock assembly includes a bracket which attaches to the upper sash of a window, and a plate which attaches to the lower sash. The plate has an outwardly projecting U-bolt. A hasp is provided with spaced plates which slide into engagement with the bracket. The hasp has a slotted hinged tongue which engages on the U-bolt. A padlock can be engaged on the U-bolt to lock the parts of the assembly together.

United States Patent lnventor Maurice A. Willner 61 Greenway Road, New London, Conn. 06320 Appl. No. 826,809 Filed May 22, 1969 Patented Mar. 30, 1971 WINDOW LOCKING DEVICE 10 Claims, 8 Drawing Figs.

US. Cl 292/281, 292/205, 292/288 Int. Cl ..E05c 19/08, E05c 19/18 Field of Search 292/5, 205,

References Cited UNITED STATES PATENTS l 1/ l 922 Loy 10/ l 925 Meerbotf.... 8/1932 .lokubaitis 12/ 1 940 Mussman Primary Examiner-Marvin A. Champion Assistant Examiner Edward J. McCarthy Att0rney-Polachek and Saulsbury ABSTRACT: A window lock assembly includes a bracket which attaches to the upper sash of a window, and a plate which attaches to the lower sash. The plate has an outwardly projecting U-bolt. A hasp is provided with spaced plates which slide into engagement with the bracket. The hasp has a slotted hinged tongue which engages on the U-bolt. A padlock can be engaged on the U-bolt to lock the parts of the assembly together.

PATENTEBMAR30I9H SHEET 1 BF 3 1' N YEN TOR 3 Maw/Ce fl. /4// ///7er ATTORNEYS mama] man 197i SHEET 3 UF 3 mvEiyToR; Mal/need /1/////7e/ WINDOW LOCKING DEVICE This invention concerns a window lock assembly arranged for holding two sections of a double-hung window in closed or partially open position.

While window locks have been generally known heretofore, they have all had the disadvantage that they can be opened or circumvented too easily. In the present invention, a hasp slides laterally into engagement with a bracket plate secured by screws on the upper sash of a double-hung window. The hasp covers screws holding the bracket to the upper sash. A plate 1 carrying a U-bolt is secured by further screws to the lower sash of the window. The tongue of the hasp engages on the U-bolt so that the hasp cannot be moved laterally off the bracket. A padlock can be engaged on the U-bolt. The tongue of the hasp covers the screws holding the plate to the lower sash. A plurality of brackets can be mounted on the upper sash, one above the other for holding the windows in different partially open position.

The invention will be explained in further detail in connection with the drawing, wherein:

FIG. I is a front elevational view of'a window lock assembly embodying the invention, shown mounted on two sashes of double-hung windows.

FIG. 2-is an enlarged sectional view taken on line 2-2 of FIG. 1.

FIG. 3 is a perspective view of the window lock assembly of FlGSrl and 2.

FIG. 4 is an exploded rear perspective view of parts of the window lock assembly.

FIG. 5 is a front perspective view of a bracket employed in the window lock assembly.

FIG. 6 is a sectional view similar to FIG. 2, showing another window lock assembly.

FIG. 7 is an exploded rear perspective view of parts of the window lock assembly of FIG. 6.

FIG. 8 is a front perspective view of another bracket.

Referring first to FIGS. 15, there is shown a windowlock assembly I0. The assembly includes a bracket 12. This bracket is generally rectangular plate formed with a transverse horizontal centrally located slot 14. The slot extends inwardly from edge l6 and terminates short of the opposite edge 18. A recess 20.is formed on the rear side of the bracket; see FIGS. 3, 4. The recess extends inwardly from edge I6 to vertical abutment 22 and extends above and below slot 14 between horizontal abutments 23, 24. Bracket I2 has aligned upper and lower countersunk screw holes 28 located near right edge 16 of the bracket as viewed in FIG. 5 and further screw holes 29 laterally displaced at the centralline A-A of the bracket. Slot M extends inwardly toward edge 18 slightly to the left of line A-A. Screws 30 secure bracket 12 to one lateral rail 32 of upper window sash 34 of double-hung windows 35, 36.

A generally rectangular plate 40 carrying an outwardly projecting U-bolt 42 disposed in a vertical plane is provided for attachment to lateral rail of lower window sash 37. The plate has screw holes 46 located near corners 48; Vertical flanges 49 extend outwardly of lateral edges of plate 40. A further flange 52 is bent horizontally forward at the upper edge of plate 49 and further vertical .flanges 54 are bent upwardly at opposite lateral edges of flange 52. The flanges 49 and 5d are spaced equally apart.

The assembly further includes a hasp 50. This hasp has a horizontal panel 56. A panel 58 extends vertically from the rear end edge of panel 56. The vertical height of panel 58 is slightly less than that of recess in bracket 12. The width of panel 58 is about equal to the width of recess 20. A pair of rectangular panels-60 extend in vertical coplanar alignment upwardly and downwardly from panel 56 and are spaced slightly forwardly from panel 58 to define a narrow horizontal bridge 59 therebetween. Bridge 59 slides and seats in slot 14 and edge 61 of panel 58 abuts abutment 22 when the hasp is properly engaged on the bracket. Panels 60 cover screws 30.

A panel 62 extends downwardly from panel 56 and terminates in a hinge eye 64 carrying a pin 66 which engages hinge eyes 68 of a tongue 70. The tongue is an L-shapcd member with upper flange 71 and depending flange 72. Flange 72 has a vertical slot 718 which engages on and receives U-bolt 42. A padlock 75 engages on the Ubolt.

When plate 40 is mounted on the lower window sash, flange 52 rests on the upper surface 76 of the sash. When the hasp is properly closed and engaged with the U-bolt 42, flanges 49 and 54 cooperate with abutment 22 and U'bolt 42 in preventing disengaging lateral movement of the hasp. Flange 72 covers screwholes 46 when the hasp is in the closed position shown in FIGS. 1, 2 and 3. Flange 71 overlays flange 52.

By the arrangement described to two windows can be maintained in closed position or in partially open position depending on the location of bracket I2 on rail 32. One or more further brackets 12 can be mounted on rail 32; see FIG. I. Any one of the upper brackets can be engaged by the hasp for locking the lower sash to the upper sash. The two windows can thus be secured together in fully closed position in frame 80 or can be held in partially closed position.

FIGS. 6 and 7 show another window lock assembly 10A which is generally similar to assembly 10 and corresponding parts are identically numbered. The same bracket I2 is employed as in assembly I0 to receive and engage hasp 50a. The U-bolt 42 is secured and extends from rectangular plate 400 for engaging flange 72a of tongue 70a. Tongue 70a is a flat member secured by hinge 82 to horizontal flange 71a which is integral with vertical panel 62. Assembly 10A has a somewhat simpler construction than assembly I0 and can be manufactured at slightly less cost. When hasp 50a is closed and locked as indicated in FIG. 6, the U-bolt 42 prevents lateralmovement of the hasp. Flange 71a rests on the upper surface 76 of the lower sash. As described in connection with FIG. 1 a plurality of brackets 12 can be mounted on rail 32. Hasp 50a can be engaged with any one of these brackets.

FIG. 8 shows a single long bracket I2a which can be used in place of a multiplicity of brackets 12. The bracket has a plurality of slots 14 spaced apart vertically of the bracket. A long recess 20a extends inwardly from the right edge 16a of the plate and tenninates at long inner abutment 22a. When either one of hasps 50 or 50a is engaged at any one slot 14 the panels 60 will cover the pairs of screw holes 28,29 just above and below the slot. By this arrangement removal of the screws covered by the hasp is prevented, which is a desirable security feature of the construction.

The several parts of the window lock assemblies described can be manufactured at low cost by mass production metal working machinery. The window lock assemblies are easily installed and provide security against tampering and opening by unauthorized persons.

Iclaim:

1. A window lock assembly for double-hung windows, comprising a generally rectangular flat bracket plate securable by screws to a lateral rail of the upper one of said windows, said bracket plate having a slot extending transversely inwardly from one lateral edge of the plate and terminating at a vertical abutment spaced from the opposite lateral edge of the plate, said bracket plate further having a recess underlying the slot and terminating at the abutment; a generally rectangular other plate securable. by other screws to a lateral rail of the lower one of said windows, said other plate having a U-bolt extending outwardly thereof; and a hasp engageable on said bracket plate, said hasp having a horizontal-first panel slidable in said slot, a vertical second panel at one end of the first panel slidably engaging in said recess and abutting said abutment when the hasp is fully engaged with the bracket plate, third panel means extending from said first panel, and a tongue pivotable on a horizontal hinge axis on said. third panel means,

said tongue having a slot to receive said U-bolt, whereby when the tongue is engaged with the U-bolt, the hasp is prevented from lateral disengagement from the bracket plate.

2. A window lock assembly as defined in claim I, wherein said third panel means extends vertically from the first panel, said tongue being hinged to the lower end of said third panel.

3. A window lock assembly as defined in claim 1, wherein said other plate has a flange extending outwardly at opposite lateral edges thereof to engage said tongue and to cooperate with said bolt in preventing lateral movement of the hasp with respect to the bracket plate.

4. A window lock assembly as defined in claim 1, wherein said hasp has vertical panels extending vertically from said first panel for abutting the bracket plate and for covering screws engaging and holding the bracket plate to the upper sash.

5. A window lock assembly as defined in claim 4, wherein said other plate has screw holes for receiving said other screws to mount said other plate to the lower sash, said tongue covering said screw holes when the tongue is engaged with said U- bolt.

6. A window lock assembly as defined in claim 1, wherein said flat bracket plate has a multiplicity of other transverse slots spaced vertically from the first named slot, said hasp being selectively engageable with any one of the other slots for holding the windows in partially open position.

7. A window lock assembly as defined in claim 4, wherein the said panel means has a portion extending horizontally. said tongue being hinged to the horizontal portion of said panel means.

8. A window lock assembly as defined in claim I, wherein said other plate has a horizontal flange at the upper edge thereof, and pairs of vertical flanges extending outwardly of lateral edges of said other plate and of said horizontal flange, said tongue being L-shaped in vertical section so that said pairs of vertical flanges engage opposite lateral edges of the tongue when the tongue is engaged with said U-bolt.

9. A window lock assembly as defined by claim 8, wherein the hasp has vertical panels extending vertically from said first panel for abutting the bracket plate and for covering screws engaging and holding the bracket plate to the upper sash.

l0. A window lock assembly as defined by claim 9. wherein said other plate has screw holes for receiving said other screws to mount said other plate to the lower sash, said tongue covering said screw holes when the tongue is engaged with said U- bolt. 

1. A window lock assembly for double-hung wiNdows, comprising a generally rectangular flat bracket plate securable by screws to a lateral rail of the upper one of said windows, said bracket plate having a slot extending transversely inwardly from one lateral edge of the plate and terminating at a vertical abutment spaced from the opposite lateral edge of the plate, said bracket plate further having a recess underlying the slot and terminating at the abutment; a generally rectangular other plate securable by other screws to a lateral rail of the lower one of said windows, said other plate having a U-bolt extending outwardly thereof; and a hasp engageable on said bracket plate, said hasp having a horizontal first panel slidable in said slot, a vertical second panel at one end of the first panel slidably engaging in said recess and abutting said abutment when the hasp is fully engaged with the bracket plate, third panel means extending from said first panel, and a tongue pivotable on a horizontal hinge axis on said third panel means, said tongue having a slot to receive said U-bolt, whereby when the tongue is engaged with the U-bolt, the hasp is prevented from lateral disengagement from the bracket plate.
 2. A window lock assembly as defined in claim 1, wherein said third panel means extends vertically from the first panel, said tongue being hinged to the lower end of said third panel.
 3. A window lock assembly as defined in claim 1, wherein said other plate has a flange extending outwardly at opposite lateral edges thereof to engage said tongue and to cooperate with said bolt in preventing lateral movement of the hasp with respect to the bracket plate.
 4. A window lock assembly as defined in claim 1, wherein said hasp has vertical panels extending vertically from said first panel for abutting the bracket plate and for covering screws engaging and holding the bracket plate to the upper sash.
 5. A window lock assembly as defined in claim 4, wherein said other plate has screw holes for receiving said other screws to mount said other plate to the lower sash, said tongue covering said screw holes when the tongue is engaged with said U-bolt.
 6. A window lock assembly as defined in claim 1, wherein said flat bracket plate has a multiplicity of other transverse slots spaced vertically from the first named slot, said hasp being selectively engageable with any one of the other slots for holding the windows in partially open position.
 7. A window lock assembly as defined in claim 4, wherein the said panel means has a portion extending horizontally, said tongue being hinged to the horizontal portion of said panel means.
 8. A window lock assembly as defined in claim 1, wherein said other plate has a horizontal flange at the upper edge thereof, and pairs of vertical flanges extending outwardly of lateral edges of said other plate and of said horizontal flange, said tongue being L-shaped in vertical section so that said pairs of vertical flanges engage opposite lateral edges of the tongue when the tongue is engaged with said U-bolt.
 9. A window lock assembly as defined by claim 8, wherein the hasp has vertical panels extending vertically from said first panel for abutting the bracket plate and for covering screws engaging and holding the bracket plate to the upper sash.
 10. A window lock assembly as defined by claim 9, wherein said other plate has screw holes for receiving said other screws to mount said other plate to the lower sash, said tongue covering said screw holes when the tongue is engaged with said U-bolt. 